Carbureter.



-- B E. MARSH. 4 GARBU'RETBR'.

H APPLIUATION FIL D uuununz I 1 049 7 H IatntedJan. 7,- 191.3.

-" 2a 5 in: a 3 41 a mmmw I ELMER E. MARSH, OF

DAVIS AND ONE-THIRD T To all 'w/wnt it mag concern:

State of Ohio,

means whereby the be automatically 0 surrounded.

g. g' 11 represents the casin through a pipe 13 communicating reservoir.

35 which communicates with tl threaded into va ve and reservoir.

1n the fuel through thevalve-seat.

CINCINNATI, OHIO, ASSIGN OR OF ONE- Application filed January 2, 1912. Serial Ho. 663,013.

-B ,it known that I, EL'MER E. MARSH, a citizen of the United States, residing at incinnati, in the county of Hamilton and have invented certain new and useful Improvements in Carbureters, of which the following is a specification.

' -My invention relates to carbureters, and has for its object the provision of novel roper fuel mixture may tamed irrespective of of the valve with various or changing conditions under which capacity. the internal combustion motor or automobilemay be running, or by which it may be The invention will be readily understood from the following description and claims,- and from the drawing, in which latter:

igure 1 is a plan view of my improved device. Fig. 2 is a vertical centrahsectio'n of the same, taken on a line corresponding to the line 2-2 of Fig. 1. Fig. 3 is a crosssection of the same, taken on a line corre-. iponding to 'the line 3-3. of Fig. 2; and,

? ig. 4; is a cross-section of the same, taken 5 a gine corresponding to the line 4-4 of 12 1s the .fuel reservolr, for gasolene or tlie like', which is in the casing, and is fed om a .suitable source of fuel suppl 14 is the fuel-valve, the valve-seat 15 of 1e reservoir by means of a fuelpassage 16 'in a bridge-piece 17, the valve-seat being formed on a plug 18 the bridge-piece and provided with a cross-passage 16' whi'chforms a art of the passage between the fuel- 20 is the primary air-inlet which in .the present exemplification surrounds the fuel valve-seat, the wall of the said primary air- 45 inlet lontracting as at 21 adjacent to the outlet of the valve-seat for effectually drawhe inner wall 22 of the .casing 11 is provided with a'mixture valve-seat 23 arranged to receive an automatic dis -valve24 shown on a stem 25; The lower end of this stem has the fuel-valve 14 formed thereon and its rt 27 in a chamber 28in the casing, 'gamber having lower spreading wa Is 29 UNITED STATES. PATENT OFFICE.

rnmn T0 ARTHUR c.

VICTOR GLUCHOWSKY, BOTH OF CINCINNATI, DHIO.

' CARB-URETER.

Specification of letters Patent. PatentdJan. 7, 1913;

and upper contracting walls 30,..the chamer communicating wrth'a passage 31 communicating the internal combustion enginev fed by the carbureter. 32 is a throttle-yalve in said passage. The upper. wall so L18. formed. by an extension 11 of the casing 11. 4

The fuel valve and its seat are quite long in the direction of axial movement of the valve for permitting appr in its fuel-supplying I 35 is an auxmary-air-supply chamber which communicates with an auxiliary air: supply passage 36 between the inner-wall .70 o the uelreservoir and the wall of the primary a1r-inlet. One of the walls, shown as i the bottom wall 37, of the auxiliary air-sup-- ply chamber, is rovided with a series of openings 38, pre erably ,of various diameters, these openings beingnormally closed by obstructions 39, shown as balls, preferably of various sizes and weights, and arranged to be selectively lifted away from are contained, by the suction of the engine. Themovements of the balls away from 'thewalls of the openings are limitedfas by providing projections 40 or various lengths, which project toward the respective balls y from the op osite walll of said auxiliary with the air-supply c amber. Provision is made for adjust-in the normal distance between said balls'andithe said projections, as by adjusting the plate which forms the wall 37 in which said openings are contained, toward and from said project-ions. Thus the plate is adjusted and' held in place by screws 42 threaded into threaded apertures 43in lugs 44 on the wall of the primary air-inlet, the a plate being held to the screws by being rcceived between shoulders 45 on said screws and nuts 46 received over the outer threaded ends 47 of said screws, the said screws turnin' loosely in the holes 48 in said plate.

in operation, during idle running of the engine and normal substantially closed throttle condition, the suction of the .engine will raise the disk 24 just sufiicieutl to permit the fuel-valve to open very sli-g itly, and to draw a slight supply of air throu h the primary air-inletpast the fuel-valve For absorbing the fuel and drawing the mixed fuel the past the valve 24 into the engine. If the e'ciablehnoveme nt 65 the walls of the openings in-which the same 80 I throttle is partially opened and the suction 11o further increase in rapidit increased, the valve 2 L will be raised, thereby opening the fuel-valve to greater extent and providing a larger supply of fuel, the volume of air passing through the primary air-inlet also increasing until the capacity of said primary'air-inlet is reached. Upon of mo'tion by the engine, one or more of t e lighter or the balls 39 will be raised from their openings, allowing additional air' to be received through the auxiliary air-intake for dilut ing the mixture received from the fuel-valve and primary air-inlet, and upon greater suction by the engine more or larger ones of the balls will be raised for increasing the auxiliary air-supply-and providing a more rarefied mixture at the higher speeds of the engine, which is a condition much desired.

It will be further noted that the primary air-intake passage and the auxiliary air-intake passage are arranged about the fuelvalve'with an inner contracting wall 'between said air-intake passages and an outer contracting wall surrounding said auxiliary air-intake passage. The dislevalye is locatedatthe contracted end of said outer contracting wall and is spaced from the contracted end of said inner contracted Wall. The disk-valve acts as a striker-plate for the primary mixture proceeding fronrthe fuel valve and primary air-intake passage for further mingling said primary mixture, which then proceeds through the outwardly ,bulged passage 28 in thoroughly mixed state to the throttle-passage. The disk-valve also acts as a striker-plate for the rarefied mixture when auxiliary air is received through the outer auxiliary air-intake passage, the inwardly sloping walls of which direct the auxiliary air into the path of the primary mixture, the currents of auxiliary air and primary mixture being thereby thoroughly mingled, and passing, as ararefied mixture through the outwardly bulged passage 28, at the lower end of which the disk-valve. is located. A thorough fuel-mixture is thus obtained.

In my improved device I dispense with the necessity of, a float and float-valve for the fuel-reservoir, and with the necessi? of springs, which in practice vary under di ferent atmospheric conditions, and the reservoir may at all times be full of fuel oil. Y

My improved device is simple, inexpensive, and can be readily assembled, and by it the proper fuel-mixtures for various conditions under which for instance an autoare automatically having an upper contracting end, an auxiliary air-intake passage surrounding sald primary air-intake passage having an upper contracting end, and a disk-valve at said upper contracting end of said auxiliary airirrtalre passage and spaced upwardly from said upper contracting end of said primary air-intake passage and acting as a strikerplate for the primary mixture of fuel and primary air and for the rarefied mixture of said primary mixture and auxiliary air, and said disk-valve having connection with said movable member of said fuel-valve for operating the same, substantially as described.

2. In a carbureter, the combination of a fuel-valve comprising a movable member, a rimary air-intake passage about said fue -valve, an auxiliary air-intake passage about said primary air-intake passage, a di viding wall between said passages and a fuel-valve, an auxiliary air-intake passage said walls contracting toward, their upper ends and being substantially parallel in radial section, and a disk-valve at the contracted end of said wall about said auxiliary air-intake passage and spaced from 'said dividing wall, said disk-valve acting as a striker-plate for the primary mixture of 'fuel' and primary air and for the rarefied mixture of primary mixture and auxiliary air, and said disk-valve having connection with said fuel-valve for operating the same, substantially as described.

3. In a carbureter, the combination of a fuel-valve comprising a movable member,

and a primary air-intake passage, an auxiliary air-intake passage and a fuel-reservoir concentrically arranged in the order named about said fuel-valve, said fuel-valve having connection across said primary air-intake passage with said fuel-reservoir, a dividing wall between said air-intalfepassages and a dividing wall between said auxiliary air-intake passage and said fuel-reservoir, said dividing walls contracting toward their upper ends and said second-named dividing wall extending above said first-named dividing wall, a disk-valve at the upper end of I said second-named dividing wall and spaced upwardly from said firstnamed dividing wall and formin a striker-plate for the fuel-mixture, sai disk-valve having connection with the said movable member of saidfuel-valve for operating the same, and an outwardly bul ed wall formin an outwardly bulged mixture passa e a ove said disk-valve into which said dis -valve opens, substantially as described.

p 4. In a carbureter, the combination of a fuel-valve comprising a movable member, a primary-air-intake passage about said valve having an upper contracting end, anauxiliary air-intake passage surrounding said pri-' mary air-intake passage having anupper contractingcnd, and a disk-valve zit-said upper 

